I want to upgrade kile 2.1 beta 4 to Latest stable version kile 2.1.3 in 'Ubuntu11.04'. Will there any problem if I upgrade it ?
My second question :
I have kile-2.1.3.tar.bz2 file. How do I install it through terminal or any other way ?

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If you don't know how to extract a tarball (in this case tar xjf kile-2.1.3.tar.bz2), you make not want to install by hand. The README contains pretty standard build instructions, however. (I'd uninstall your system-installed version first.)
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jonMay 28 '13 at 15:52

Are there any features you absolutely need in kile 2.1.3? You would be still on texlive 2009. I think that's more of a problem.
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Tobias SchulaMay 28 '13 at 17:35

There is a Ubuntu Stackexchange sister site askubuntu.org which is better suited for questions about installing and updating Ubuntu packages. (The exeption is (La)TeX, e.g. TeXLive, itself)
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Martin ScharrerMay 29 '13 at 10:49